JP4529662B2 - Mating joint - Google Patents

Mating joint Download PDF

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JP4529662B2
JP4529662B2 JP2004350049A JP2004350049A JP4529662B2 JP 4529662 B2 JP4529662 B2 JP 4529662B2 JP 2004350049 A JP2004350049 A JP 2004350049A JP 2004350049 A JP2004350049 A JP 2004350049A JP 4529662 B2 JP4529662 B2 JP 4529662B2
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joint
plate member
male
male joint
female
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JP2006161283A (en
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淳 岡田
篤敬 川畑
伸明 滝口
秀昭 長山
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JFE Engineering Corp
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Description

本発明は、トンネル等の土木構造物に用いられるセグメント同士を連結するためのリング継手に関するものである。   The present invention relates to a ring joint for connecting segments used in a civil engineering structure such as a tunnel.

トンネル工法として、主要な工法の一つであるシールド工法は、シールドを地中に推進させ、シールド外殻及びセグメントにより保持しながら土砂の崩壊を防ぎ、トンネルを構築する工法である。   As a tunnel construction method, the shield construction method, which is one of the main construction methods, is a construction method for constructing a tunnel by propelling the shield into the ground and preventing the earth and sand from collapsing while being held by the shield shell and segments.

シールド工法において、リング状のセグメント部材であるセグメントリングを軸方向に連結していくリング継手の従来技術１として、図７にボルト接合継手を示す。このボルト接合継手は、各セグメントリング１０５、１０６に孔をあけ、ボルト１０１とナット１０３により締め付けを行って接合するものである。図において、１０４はワッシャである。   FIG. 7 shows a bolted joint as a prior art 1 of a ring joint in which the segment rings, which are ring-shaped segment members, are connected in the axial direction in the shield method. This bolted joint is formed by making holes in the segment rings 105 and 106 and fastening them with bolts 101 and nuts 103. In the figure, reference numeral 104 denotes a washer.

又、従来技術２として、図８に特許文献１の継手部材を示す。これは、継手部材２１０が、一方のセグメント２０１から一部が突出して設けられる雄継手２２０と、他方のセグメント２０２に設けられる雌継手２３０とを備え、雄継手２２０は、先端に向うほど径が小さくなる形状の頭部２２１を有し、雌継手２３０は、弾性変形可能な板体２３２と、各板体の先部から内側に向って突出して、雄継手２２０の頭部２２１を挿入した際に、雄継手２２０の底部２２１ａに掛合する掛合部２３２ａを備えており、雄継手２２０を雌継手２３０に挿入することにより接合するものである。図において、２０１ａ、２０２ａは、それぞれセグメント２０１、２０２相互の接合面、２３２ｂは、雌継手２３０の板体２３２相互間の隙間である。   Moreover, as a prior art 2, the joint member of patent document 1 is shown in FIG. This is because the joint member 210 includes a male joint 220 provided with a part protruding from one segment 201 and a female joint 230 provided on the other segment 202, and the male joint 220 has a diameter toward the tip. The head 221 has a smaller shape, and the female joint 230 protrudes inward from the plate 232 that can be elastically deformed and the front of each plate, and the head 221 of the male joint 220 is inserted. In addition, a hooking portion 232 a that engages with the bottom 221 a of the male joint 220 is provided, and the male joint 220 is joined by being inserted into the female joint 230. In the figure, 201a and 202a are joint surfaces between the segments 201 and 202, respectively, and 232b is a gap between the plate bodies 232 of the female joint 230.

又、特許文献２には、先細の先端部を有するテーパー状円柱ピンの胴部のくびれに、ばねで付勢された一対の留め金を上下から挿入するようにしたリング継手が記載され、特許文献３には、円筒形の部材厚が先端部になるに従い徐々に薄く形成されるように内周面にテーパーが設けられた雄型部材を、先端部及び底部に比べ中央部の断面を小さくした雌穴に挿入するようにされた継手が記載され、特許文献４には、鋼殻セグメントにおけるトンネル円周方向継手部材を、相対する部材間で接触可能な組立時位置決めガイド兼用の係合凹部と係合凸部を有する継手部板状鋼材で構成した複雑な構造の鋼殻セグメントが記載され、特許文献５には、円筒くぼみ付き雄と円筒状に配置された引掛けばねを組合せた継手金具が記載され、特許文献６には、円筒くびれ付き雄と円筒状に配置された板ばねを組合せたセグメントの接合構造が記載され、特許文献７には、底部に向かって断面が徐々に広がるテーパー形状の内周面を有する固定孔が設けられた雌型部材と、前記固定孔と嵌合する外形の雄型部材を組合せた継手が記載されている。   Patent Document 2 describes a ring joint in which a pair of clasps biased by a spring are inserted from above and below into the constriction of the body of a tapered cylindrical pin having a tapered tip. In Document 3, a male member having a taper on the inner peripheral surface so that the thickness of the cylindrical member is gradually reduced as the tip portion is formed is reduced. A joint designed to be inserted into a female hole is described, and Patent Document 4 discloses an engagement recess serving as a positioning guide for assembly and capable of contacting a tunnel circumferential joint member in a steel shell segment between opposing members. And a steel shell segment having a complicated structure composed of a plate-shaped steel member having a joint and an engaging convex portion. Patent Document 5 discloses a joint in which a male with a cylindrical recess and a hook spring arranged in a cylindrical shape are combined. A metal fitting is described, and in Patent Document 6 The joint structure of the segment which combined the male with a cylindrical constriction and the leaf | plate spring arrange | positioned cylindrically is described, and patent document 7 has a fixed hole which has a taper-shaped inner peripheral surface where a cross section spreads gradually toward a bottom part. There is described a joint obtained by combining a female member provided with a male member having an outer shape that fits into the fixing hole.

特開２００２−１０６２９２号公報JP 2002-106292 A 特開２００３−３２８６９３号公報JP 2003-328893 A 特開２００３−１９３７９７号公報JP 2003-193797 A 特開２００２−８１２９７号公報JP 2002-81297 A 特開２００１−１０７６８８号公報JP 2001-107688 A 特開平１０−８２２８３号公報JP-A-10-82283 特開２００３−２６２０９２号公報JP 2003-262092 A

しかしながら従来技術１のボルト接合継手は、接合面の孔位置を正確に合わせなければならないという問題がある。又、一般に、ボルトの締め付け作業を狭小空間且つ高所で行う必要がある。このような場合は、ボルトの締め付け作業が煩雑且つ困難となり、多大な時間と費用が必要となる。   However, the bolt-joint joint of Prior Art 1 has a problem that the hole position of the joint surface must be accurately matched. In general, it is necessary to perform the bolt tightening operation in a narrow space and at a high place. In such a case, the bolt tightening operation becomes complicated and difficult, and a lot of time and cost are required.

一方、従来技術２に関しては、雄継手２２０及び雌継手２３０がテーパー形状を有しており、又、雌継手２３０の部品数も多いため、継手の加工及び製作がコスト高となる。セグメント工法においては数多くのリング継手が必要であり、継手のコスト高は大きな問題となる。   On the other hand, regarding the prior art 2, since the male joint 220 and the female joint 230 have a tapered shape and the number of parts of the female joint 230 is large, the processing and manufacturing of the joint are expensive. In the segment method, a large number of ring joints are required, and the high cost of the joints is a big problem.

更に、特許文献２乃至７に記載の従来技術も、構造が複雑で、大部分が雌継手に対して複雑な加工が必要だったり、施行が容易でないという問題点を有していた。   Furthermore, the prior arts described in Patent Documents 2 to 7 have a problem that the structure is complicated, and most of them require complicated processing on the female joint, and the enforcement is not easy.

本発明は、前記従来の問題点を解決するべくなされたもので、雌継手に対して複雑な加工を行なう必要が無く、安価で、且つ、施工が容易な嵌合継手を提供することを課題とする。   The present invention has been made to solve the above-described conventional problems, and it is an object to provide a fitting joint that is inexpensive and easy to construct without requiring complicated processing on a female joint. And

本発明は、トンネル壁体を構築するセグメントをトンネル軸方向に連結するためのリング継手であって、トンネルの軸方向に位置する２つのセグメント部材のうち、一方のセグメント部材に設けられた雄継手と、前記一方のセグメント部材と相対する面に位置する他方のセグメント部材に設けられた雌継手とにより構成され、前記雄継手は、その一部である雄継手軸部が前記雌継手と嵌合する方向に突出した状態で、前記一方のセグメント部材に設置され、該雄継手軸部の表面に先端部を固定した板部材固定部と弾性変形可能な板部材変形部を有する板部材を配設し、前記雌継手は、前記板部材変形部が、窄まることにより前記雄継手を挿通できる大きさの雌継手孔部を有し、且つ挿通後、前記板部材変形部が弾性復帰して広がり、雌継手孔部の端部に掛合し、また、前記板部材変形部が前記雌継手孔部の端部に掛合後、該板部材変形部が開いたり、ずれたりすることを回避するために、前記雌継手に板部材変形部固定板が設けられており、さらに、前記雄継手の前記板部材は、前記雄継手軸部と反対側の面のみにおいて前記板部材固定部と前記板部材変形部との境界部付近に切り欠き部が設けられており、該切り欠き部があることにより前記板部材変形部と前記雄継手とのなす角度が大きくなって、前記板部材変形部は前記雌継手孔部の端部に確実に掛合し、前記雄継手が前記雌継手に嵌合した後に引き抜き力が作用した場合でも、断面力を前記板部材変形部から前記板部材固定部へ確実に伝達できることを特徴とする嵌合継手により、上記課題を解決したものである。 The present invention relates to a ring joint for connecting segments constituting a tunnel wall body in the tunnel axial direction, and a male joint provided on one of the two segment members positioned in the axial direction of the tunnel. And a female joint provided on the other segment member located on the surface facing the one segment member, and the male joint is a part of which the male joint shaft portion is fitted with the female joint. A plate member having a plate member fixing portion that is installed on the one segment member and has a tip end fixed to the surface of the male joint shaft portion and a plate member deformation portion that can be elastically deformed is disposed in a state protruding in the direction of The female joint has a female joint hole of a size that allows the male joint to be inserted when the plate member deformed portion is narrowed, and after the insertion, the plate member deformed portion elastically returns and expands. , Female joint hole In order to avoid the plate member deforming portion from opening or shifting after the plate member deforming portion is engaged with the end portion of the female joint hole portion, A plate member deforming portion fixing plate is provided, and the plate member of the male joint is a boundary portion between the plate member fixing portion and the plate member deforming portion only on the surface opposite to the male joint shaft portion. A notch is provided in the vicinity, and the angle formed between the plate member deformed portion and the male joint is increased by the notch, and the plate member deformed portion is an end of the female joint hole. The cross-sectional force can be reliably transmitted from the plate member deforming portion to the plate member fixing portion even when a pulling force is applied after the male joint is securely engaged with the female joint and the male joint is fitted to the female joint. The above-mentioned problem is solved by the fitting joint.

前記雄継手軸部を板状又は角柱状体として、特別な加工を不要とし、製造や、溶接や、穴あけ加工を容易としてもよい。   The male joint shaft portion may be a plate or prismatic body, so that no special processing is required, and manufacturing, welding, or drilling may be facilitated.

又、前記板部材変形部は板部材を途中で折り曲げたものとしてもよい。   The plate member deforming portion may be a plate member bent in the middle.

更に、前記雄継手及び雌継手を鋼製としてもよい。   Furthermore, the male joint and the female joint may be made of steel.

更に又、前記板部材をばね鋼としてもよい。   Furthermore, the plate member may be spring steel.

本発明においては、雄継手軸部の表面に単純な形状の板部材を配設すると共に、雌継手は、孔部と必要に応じて固定板だけの極めて単純な構造であるので、雌継手に対して複雑な加工などを行なう必要がない。更に、本発明の雄継手軸部は突出しているので、板部材の配設が容易であり、先行特許文献のように、奥まった雌継手に対して複雑な加工を施したり、精度よく部分を配設したりする必要が無く、安価である。   In the present invention, a simple-shaped plate member is disposed on the surface of the male joint shaft portion, and the female joint has a very simple structure including only a hole and a fixed plate as required. There is no need for complicated processing. Further, since the male joint shaft portion of the present invention protrudes, it is easy to dispose the plate member, and as in the prior patent document, complicated processing is applied to the recessed female joint, and the portion is accurately placed. There is no need to arrange it, and it is inexpensive.

更に、本発明による嵌合継手においては、雄継手を雌継手に挿入するだけで継手が嵌合し、セグメントの連結が可能となるため、ボルト接合継手のようにボルトの締め付け作業が不要となる。又、雄継手軸部に対し、雌継手孔部の径を所定のクリアランスを設けて設定してあるので、２つのセグメント部材間の継手位置に多少のずれが生じている場合でも、セグメントの連結が可能となる。以上により、ボルト接合継手など従来技術と比較して現場における施工作業が軽減され、工費と工期の低減効果が得られる。
また、切り欠き部があることにより、比較的小さい力でスムーズに挿入できるので、板部材に切り欠き部のない構造よりも板部材の板厚を少し大きく設定することが可能となる。又、切り欠き部があることにより、板部材変形部の角度が大きくなって確実に雌継手孔部の端部に掛合させることができる。さらに、雌継手に板部材変形部固定板が設けられていることにより、板部材変形部が雌継手孔部の端部にいったん掛合すれば、嵌合後に引き抜き力が作用した場合でも、断面力を板部材変形部から板部材固定部へ確実に伝達できる。以上により、スムーズな挿入性と大きな引き抜き耐力を得られる継手構造とすることができる。
本発明による嵌合継手を対象とした実験及び解析によると、請求項１の嵌合継手の場合、板部材に切り欠き部のない雄継手を雌継手に挿入する時の力を１とすると、請求項１の雄継手を雌継手に挿入する時の力は約０．２５倍となる。又、嵌合後の引き抜き耐力は約６倍となる。 Furthermore, in the fitting joint according to the present invention, the joint can be fitted and the segments can be connected simply by inserting the male joint into the female joint, so that the bolt tightening work is not required like a bolted joint. . In addition, since the diameter of the female joint hole is set with a predetermined clearance with respect to the male joint shaft, even if there is some deviation in the joint position between the two segment members, the segment connection Is possible. As described above, the construction work at the site is reduced as compared with the prior art such as a bolted joint, and the construction cost and the construction period can be reduced.
Further, since the cutout portion allows smooth insertion with a relatively small force, the plate thickness of the plate member can be set a little larger than a structure in which the plate member has no cutout portion. In addition, since the notched portion is present, the angle of the plate member deforming portion is increased and can be reliably engaged with the end portion of the female joint hole . Further, since the plate member deforming portion fixing plate is provided in the female joint, once the plate member deforming portion is engaged with the end portion of the female joint hole portion, even if the pulling force is applied after the fitting, the sectional force Can be reliably transmitted from the plate member deforming portion to the plate member fixing portion. By the above, it can be set as the joint structure which can obtain smooth insertion property and a big pulling strength.
According to the experiment and analysis for the fitting joint according to the present invention, in the case of the fitting joint according to claim 1, when the force when inserting the male joint without a notch in the plate member into the female joint is 1, The force when inserting the male joint of claim 1 into the female joint is about 0.25 times. Moreover, the pulling-out strength after fitting becomes about 6 times.

更に、請求項２による嵌合継手においては、非常に単純な板状又は角柱状の部材から構成され、特別な加工（例えば円筒状、円錐状など）が不要である。又、単純な板状又は角柱状の部材であるため、溶接接合などの作業が容易である。更に、深さ方向に等径でテーパーが無いので、雌継手孔部の孔あけ加工も単純である。以上より、継手の製作コストの低減、施工性向上の効果が得られ，製作精度の確保も容易となる。   Furthermore, the fitting joint according to the second aspect is constituted by a very simple plate-like or prismatic member, and does not require any special processing (for example, a cylindrical shape, a conical shape, etc.). Moreover, since it is a simple plate-shaped or prism-shaped member, operations such as welding are easy. Furthermore, since the diameter is equal in diameter and there is no taper, drilling of the female joint hole is also simple. As described above, the production cost of the joint can be reduced and the workability can be improved, and the production accuracy can be easily secured.

以下、図面を参照して、本発明の実施形態を詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図１（Ａ）、（Ｂ）に、セグメント部材１と２を嵌合する前の比較例の雄継手１０及び雌継手２０の（Ａ）Ａ−Ａ線に沿う側面から見た断面図、及び、（Ｂ）Ｂ−Ｂ線に沿う上面から見た断面図を示す。トンネルの軸方向に位置する２つのセグメント１、２のうち、一方（図の右側）のセグメント部材１には雄継手１０が設けられ、他方（図の左側）のセグメント部材２には雌継手２０が設けられている。 FIGS. 1A and 1B are cross-sectional views of the male joint 10 and the female joint 20 of the comparative example before fitting the segment members 1 and 2 as viewed from the side along the line (A) A-A; (B) Sectional drawing seen from the upper surface which follows a BB line is shown. Of the two segments 1 and 2 positioned in the axial direction of the tunnel, one (right side in the figure) segment member 1 is provided with a male joint 10, and the other (left side in the figure) segment member 2 is provided with a female joint 20. Is provided.

雄継手１０は、雄継手固定板１２、雄継手軸部１４、板部材１６から構成され、雄継手固定板１２によりセグメント部材１と固定されている。雄継手軸部１４は、剛性及び耐荷力の高い板状体であり、雌継手２０と嵌合する方向に突出した状態で設置されている。雄継手軸部１４の表面（図では上下の両面）には板部材１６が取り付けられている。板部材１６は、先端部を雄継手軸部１４に固定された板部材固定部１６ａと、弾性変形可能な板部材変形部１６ｂから構成されている。   The male joint 10 includes a male joint fixing plate 12, a male joint shaft portion 14, and a plate member 16, and is fixed to the segment member 1 by the male joint fixing plate 12. The male joint shaft portion 14 is a plate-like body having high rigidity and load resistance, and is installed in a state of protruding in a direction in which the female joint 20 is fitted. A plate member 16 is attached to the surface of the male joint shaft portion 14 (upper and lower surfaces in the figure). The plate member 16 includes a plate member fixing portion 16a having a distal end portion fixed to the male joint shaft portion 14, and a plate member deforming portion 16b capable of elastic deformation.

雌継手２０は、セグメント部材２に設けられた雌継手孔部２２と、セグメント部材２に固定された板部材変形部固定板２４から構成されている。雌継手孔部２２は、板部材変形部１６ｂが窄まることにより雄継手１０を挿通できる大きさを有し、且つ、雄継手挿通後、板部材変形部１６ｂが弾性復帰して広がり、雌継手孔部２２の端部２２ａに掛合する大きさに設定されている。又、板部材変形部固定板２４は、雄継手挿通後、板部材変形部１６ｂが開いたり、ずれたりすること回避するために設けられる。   The female joint 20 includes a female joint hole 22 provided in the segment member 2 and a plate member deforming portion fixing plate 24 fixed to the segment member 2. The female joint hole portion 22 has such a size that the male joint 10 can be inserted when the plate member deforming portion 16b is narrowed, and after the male joint is inserted, the plate member deforming portion 16b is elastically restored and widened. The size is set to be engaged with the end 22 a of the hole 22. The plate member deforming portion fixing plate 24 is provided in order to avoid the plate member deforming portion 16b from being opened or displaced after the male joint is inserted.

図２に、雄継手１０を雌継手２０に挿入中の状態を示す。雄継手１０を雌継手２０に挿入する際には、板部材変形部１６ｂが矢印Ｃのように変形して折り畳まれる。挿通後は、図３（Ａ）、（Ｂ）に示す如く、板部材変形部１６ｂが矢印Ｄのように開き、雌継手孔部２２の端部２２ａと板部材変形部固定板２４により嵌合される。これにより、嵌合後に２つのセグメント１、２に引き抜き力が作用した場合でも、セグメントを連結した状態を維持できる。又、雄継手軸部１４に対し、雌継手孔部２２の径を所定のクリアランスを設けて設定してあるので、セグメント部材１とセグメント部材２間の継手位置に多少のずれが生じている場合でも、セグメントの連結が可能となる。   FIG. 2 shows a state where the male joint 10 is being inserted into the female joint 20. When the male joint 10 is inserted into the female joint 20, the plate member deforming portion 16b is deformed and folded as indicated by an arrow C. After the insertion, as shown in FIGS. 3A and 3B, the plate member deforming portion 16b opens as indicated by an arrow D and is fitted by the end 22a of the female joint hole 22 and the plate member deforming portion fixing plate 24. Is done. Thereby, even when a drawing force acts on the two segments 1 and 2 after fitting, the state where the segments are connected can be maintained. In addition, since the diameter of the female joint hole 22 is set with a predetermined clearance with respect to the male joint shaft part 14, there is a slight shift in the joint position between the segment member 1 and the segment member 2. However, the segments can be connected.

なお、本実施形態において、雄継手軸部１４の形状は、板状体としたが、これに限らず、一部に円形や楕円形断面を有する棒状としてもよい。雌継手孔部２２についても同様である。又、雄継手軸部１４は、雄継手固定板１２を用いずに、セグメント部材１に直接設置しても構わない。   In the present embodiment, the shape of the male joint shaft portion 14 is a plate-like body, but is not limited to this, and may be a rod shape having a circular or elliptical cross section in part. The same applies to the female joint hole 22. Further, the male joint shaft portion 14 may be directly installed on the segment member 1 without using the male joint fixing plate 12.

また、板部材１６の個数は、２個に限定することなく、２個以上の複数個設けても構わない。板部材１６の設置位置については、雄継手軸部１４の表面であれば特に限定されない。   Further, the number of plate members 16 is not limited to two, and a plurality of plate members 16 may be provided. About the installation position of the board member 16, if it is the surface of the male joint axial part 14, it will not specifically limit.

次に、図４に、請求項１に係る本発明の実施形態を示す。この実施形態は、板部材１６について、その雄継手軸部１４への固定部１６ａと板部材変形部１６ｂとの境界部付近に滑らかな切り欠き部１６ｃを設ける構造としたものである。 Next, FIG. 4 shows the implementation form of the present invention according to claim 1. Implementation form of this, for the plate member 16 is obtained by a structure in which a smooth cut portion 16c in the vicinity of the boundary between the fixed portion 16a and the plate member deformed portion 16b to the male coupling shaft 14.

この切り欠き部１６ｃがあることにより、雄継手１０を雌継手２０に挿入する際に、図５に矢印Ｃで示すように、板部材変形部１６ｂがスムーズに変形して折り畳まれ、比較的小さい力でスムーズに挿入できるので、板部材１６に切り欠き部１６ｃのない前記比較例の構造よりも板部材１６の板厚を少し大きく設定することが可能となる。又、図６に示すように、切り欠き部１６ｃがあることにより、板部材変形部１６ｂの角度が大きくなって、矢印Ｄで示す如く、確実に雌継手孔部２２の端部２２ａに掛合し、嵌合後に引き抜き力が作用した場合でも、断面力を板部材変形部１６ｂから板部材固定部１６ａへ確実に伝達できる。以上により、スムーズな挿入性と大きな引き抜き耐力を得られる継手構造とすることができる。 Due to the presence of the notches 16c, when the male joint 10 is inserted into the female joint 20, the plate member deforming portion 16b is smoothly deformed and folded as shown by an arrow C in FIG. Since it can be smoothly inserted by force, the plate thickness of the plate member 16 can be set slightly larger than the structure of the comparative example in which the plate member 16 does not have the notch 16c. Further, as shown in FIG. 6, the presence of the notch 16c increases the angle of the plate member deforming portion 16b so that it can be securely engaged with the end 22a of the female joint hole 22 as shown by the arrow D. Even when a pulling force is applied after the fitting, the cross-sectional force can be reliably transmitted from the plate member deforming portion 16b to the plate member fixing portion 16a . By the above, it can be set as the joint structure which can obtain smooth insertion property and a big pulling strength.

比較例に係る嵌合継手の嵌合前の状態を示す（Ａ）側面から見た断面図及び（Ｂ）上面から見た断面図Sectional view taken along the cross-sectional view and (B) the upper surface seen from (A) side showing a state before fitting of the fitting joint according to a comparative example 比較例の雄継手を雌継手に挿入中の状態を示す側面から見た断面図Sectional drawing seen from the side which shows the state in which the male joint of a comparative example is inserted in the female joint 同じく嵌合後の状態を示す（Ａ）側面から見た断面図及び（Ｂ）上面から見た断面図(A) sectional view seen from the side and (B) sectional view seen from the top showing the state after fitting 本発明に係る嵌合継手の実施形態の嵌合前の状態を示す側面から見た断面図Sectional view from the side showing a state before fitting of the implementation form of the fitting joint according to the present onset bright 本発明の実施形態の雄継手を雌継手に挿入中の状態を示す側面から見た断面図Sectional drawing seen from the side which shows the state in inserting the male joint of embodiment of this invention in the female joint 本発明の実施形態において嵌合後に引き抜き力が作用した場合の継手の状態を示す側面から見た断面図Sectional drawing seen from the side which shows the state of the joint when extraction force acts after fitting in embodiment of this invention 従来技術１を示す側面から見た断面図Sectional view seen from the side showing Prior Art 1 従来技術２を示す（Ａ）側面図及び（Ｂ）断面図(A) Side view and (B) Cross-sectional view showing prior art 2

符号の説明Explanation of symbols

１、２…セグメント部材
１０…雄継手
１２…雄継手固定板
１４…雄継手軸部
１６…板部材
１６ａ…板部材固定部
１６ｂ…板部材変形部
１６ｃ…切り欠き部
２０…雌継手
２２…雌継手孔部
２２ａ…端部
２４…板部材変形部固定板 DESCRIPTION OF SYMBOLS 1, 2 ... Segment member 10 ... Male joint 12 ... Male joint fixing plate 14 ... Male joint axial part 16 ... Plate member 16a ... Plate member fixing part 16b ... Plate member deformation | transformation part 16c ... Notch part 20 ... Female joint 22 ... Female Joint hole 22a ... End 24 ... Plate member deformation portion fixing plate

Claims (5)

トンネル壁体を構築するセグメントをトンネル軸方向に連結するためのリング継手であって、
トンネルの軸方向に位置する２つのセグメント部材のうち、一方のセグメント部材に設けられた雄継手と、前記一方のセグメント部材と相対する面に位置する他方のセグメント部材に設けられた雌継手とにより構成され、
前記雄継手は、その一部である雄継手軸部が前記雌継手と嵌合する方向に突出した状態で、前記一方のセグメント部材に設置され、該雄継手軸部の表面に先端部を固定した板部材固定部と弾性変形可能な板部材変形部を有する板部材を配設し、
前記雌継手は、前記板部材変形部が、窄まることにより前記雄継手を挿通できる大きさの雌継手孔部を有し、且つ挿通後、前記板部材変形部が弾性復帰して広がり、雌継手孔部の端部に掛合し、
また、前記板部材変形部が前記雌継手孔部の端部に掛合後、該板部材変形部が開いたり、ずれたりすることを回避するために、前記雌継手に板部材変形部固定板が設けられており、
さらに、前記雄継手の前記板部材は、前記雄継手軸部と反対側の面のみにおいて前記板部材固定部と前記板部材変形部との境界部付近に切り欠き部が設けられており、該切り欠き部があることにより前記板部材変形部と前記雄継手とのなす角度が大きくなって、前記板部材変形部は前記雌継手孔部の端部に確実に掛合し、前記雄継手が前記雌継手に嵌合した後に引き抜き力が作用した場合でも、断面力を前記板部材変形部から前記板部材固定部へ確実に伝達できることを特徴とする嵌合継手。 A ring joint for connecting segments constituting a tunnel wall in the tunnel axis direction,
Of the two segment members positioned in the axial direction of the tunnel, a male joint provided on one segment member and a female joint provided on the other segment member positioned on the surface facing the one segment member Configured,
The male joint is installed on the one segment member with a male joint shaft portion, which is a part of the male joint, protruding in a direction fitting with the female joint, and the tip is fixed to the surface of the male joint shaft portion. A plate member having a plate member fixing portion and an elastically deformable plate member deformation portion,
The female joint has a female joint hole of a size that allows the male joint to be inserted when the plate member deformed portion is narrowed, and after insertion, the plate member deformed portion elastically returns and expands, Engage with the end of the joint hole,
Further, in order to avoid the plate member deforming portion from opening or shifting after the plate member deforming portion is engaged with the end portion of the female joint hole portion, a plate member deforming portion fixing plate is provided on the female joint. Provided,
Furthermore, the plate member of the male joint is provided with a notch near the boundary between the plate member fixing portion and the plate member deforming portion only on the surface opposite to the male joint shaft portion , Due to the notch, the angle formed by the plate member deformed portion and the male joint is increased, the plate member deformed portion is securely engaged with the end of the female joint hole, and the male joint is A fitting joint, wherein a cross-sectional force can be reliably transmitted from the plate member deforming portion to the plate member fixing portion even when a pulling force is applied after fitting to a female joint . 前記雄継手軸部が板状又は角柱状体であることを特徴とする請求項１に記載の嵌合継手。   The fitting joint according to claim 1, wherein the male joint shaft portion is a plate-like or prismatic body. 前記板部材変形部が板部材を途中で折り曲げたものであることを特徴とする請求項１又は２に記載の嵌合継手。   The fitting joint according to claim 1, wherein the plate member deforming portion is a plate member bent in the middle. 前記雄継手及び雌継手が鋼製であることを特徴とする請求項１乃至３のいずれかに記載の嵌合継手。   The fitting joint according to any one of claims 1 to 3, wherein the male joint and the female joint are made of steel. 前記板部材がばね鋼であることを特徴とする請求項１乃至４のいずれかに記載の嵌合継手。   The fitting joint according to any one of claims 1 to 4, wherein the plate member is spring steel.
JP2004350049A 2004-12-02 2004-12-02 Mating joint Expired - Fee Related JP4529662B2 (en)

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JP4818899B2 (en) * 2006-12-25 2011-11-16 Ｊｆｅ建材株式会社 Segment joint structure and segment having the same
JP6162594B2 (en) * 2013-12-19 2017-07-12 東急建設株式会社 Segment structure
JP6162614B2 (en) * 2014-01-24 2017-07-12 東急建設株式会社 Segment structure
CN110608053A (en) * 2019-10-30 2019-12-24 华东交通大学 Structure for simulating shield tunnel circumferential weld joint

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5228056Y2 (en) * 1973-03-09 1977-06-25
JP2575192B2 (en) * 1988-09-01 1997-01-22 純一 都築 Concrete segment
JPH11223094A (en) * 1998-02-06 1999-08-17 Kajima Corp Joint structure between ring of segment used in shield tunnel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5228056Y2 (en) * 1973-03-09 1977-06-25
JP2575192B2 (en) * 1988-09-01 1997-01-22 純一 都築 Concrete segment
JPH11223094A (en) * 1998-02-06 1999-08-17 Kajima Corp Joint structure between ring of segment used in shield tunnel

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